baber/WOPTO huggingface dataset:
Patent GB-809384-A (GB)
Title: Valve structures for the control of fluids
Inventor: GABRIEL CHARLES P
IPC: B64D10/00
Filed: 1956-11-19
Abstract: 809,384. Valves. ARO EQUIPMENT CORPORATION. Nov. 19, 1956, No. 35368/56. Class 135. A valve for automatically controlling the inflation of an anti-G flying suit, comprises a valve body 10, having an operating chamber 26 connected through a connection 27 with the suit, an inlet chamber 15 connected through a pressure-reducing valve 13 and inlet 12 to a fluid-pressure source and an exhaust chamber opening through ports 34 with the atmosphere. The exhaust chamber is separated from the chamber 26 by a diaphragm 30 which supports a weight 32 and carries an exhaust valve element 29 urged upwardly by a spring 56 and co-operable with another element 28 fixed on the upper end of a tube 19. The tube 19 intermediate its ends carries an inlet valve member 16 co-operable with a fixed seat 17 and at its lower end a bellows 18 open internally to inlet pressure so that the inlet pressure acting on the back of the valve member 16 is balanced. An adjustable spring 21 urges the valve member 16 and the element 28 upwardly so that for ordinary values of G the inlet valve is closed and the exhaust valve open to connect the suit with atmospheric pressure. Another weight 33 may on rotation of a knob 39 be either held against a cover plate 35 of the valve body 10 by pins 44 so that it is ineffective or allowed to fall on to the weight 32 to supplement that weight to allow the inlet valve to stay open longer and increase the pressure in the suit. On an increase of G above ordinary values the weight 32 or weights 32, 33 move downwardly to close the exhaust valve and open the inlet valve to allow pressure to build up in the suit corresponding to the value of G. A relief valve 49 is fitted to limit the build-up of pressure in the suit to, e.g., a value equivalent to 10 G. A spring-loaded control button 46 having a depending rod 45 permits the aviator to manually open the valve to inflate the suit.
Patent GB-1347146-A (GB)
Title: Axially operating chuck
IPC: B23B31/18
Filed: 1971-07-28
Abstract: 1347146 Chucks D FISCHER and R KOHLERT 28 July 1971 [29 July 1970 6 July 1971] 35449/71 Heading B3B A chuck comprises clamping elements 7 pivotally connected to bifurcated radially adjustable members 15 clampable in tee slots 5 in a supporting member 3 which is axially displaceable within the cylindrical body 2 of the chuck by way of a ball-and-socket connection 31, 34 between a pull rod 37 and the supporting member 3 respectively. The chuck body 2 has an abutment cover-plate 6 with openings 23 through which the clamping elements extend and are guided, the shank portions 26, 39 of each clamping element 7 co-operating with the surface of its respective opening whereby axial displacement of the support member 3 by actuation of the pull rod 37 causes pivoting and parallel movement of the elements 7 relative to the chuck axis to pull and clamp a workpiece against the abutment plate. The chuck may have 3, 4 or 5 clamping elements and alternative size workpieces can be accommodated by radial adjustment of the bifurcated members 15 in the tee slots in the support member and by changing the abutment plate which has appropriately located openings. The chuck may be used for internal and external gripping, the internal gripping being permitted by reversing the bifurcated members 15 in the tee slots and the clamping elements on the member 15.
Patent GB-812830-A (GB)
Title: Aminoisoxazolidone compounds
Filed: 1955-12-12
Abstract: The invention comprises compounds of the formula <FORM:0812830/IV (b)/1> in which X, Y and Z are H or alkyl, aralkyl or aryl of 1-8 carbon atoms, and R and R2 are H or alkyl or aralkyl of 1-8 carbon atoms.  These are made by treating with a base compounds of the formula R-NH-O-CXY-CZ (NHR2)-COOR4 or acid addition salts thereof, where R4 is C1-C8 alkyl.  The base used for cyclisation is preferably an aqueous alkali metal hydroxide in amount and concentration such that the pH after the reaction is 10-11.  The mixture is preferably left to stand for 10-30 minutes and then acidified with an acid (e.g. hydrochloric or acetic), if desired after addition of an ethanol-isopropanol mixture and removal of inorganic salts.  The product then crystallizes or is adsorbed on an anion-exchange resin and thence removed with water in the presence of carbon dioxide. Examples show the preparation of 4-amino-3-isoxazolidone and its 5-methyl derivative, the former being resolved with tartaric acid. Starting materials are mentioned in which R and R2 are also methyl, propyl and benzyl, X and Y are methyl, ethyl or phenyl and Z is methyl or benzyl.  The products are anti-bacterial agents for animals and plants.  The starting materials are prepared as follows: a 4-carbalkoxy-oxazoline of the formula <FORM:0812830/IV (b)/2> where R3 is C1-C8 alkyl, aryl or aralkyl and R5 is C1-C8 alkyl, is treated with an hydroxylamine R-NHOH in the presence of a base under anhydrous conditions to give an hydroxylamide <FORM:0812830/IV (b)/3> and the latter reacted with R2Q in an inert solvent to form <FORM:0812830/IV (b)/4> where Q is chlorine, bromine or iodine. Alkaline cyclisation in a water-miscible solvent produces a 4-acylamino-isoxazolidone, <FORM:0812830/IV (b)/5> which when treated with R4OH under acidic conditions forms the required compound R-NH -O-CXY-CZ(NHR2)-COOR4. Typical compounds and reagents are specified for each step. Examples are given of the preparation of 2 - phenyl - 4 - carbohydroxamido - 2 - oxazoline, 2 - phenyl - 4 - carbohydroxamide - 5-methyl - 2 - oxazoline, a  - benzamido - b  - chloropropionyl - hydroxylamine, a  - benzamido - b -chloro - butyryl - hydroxylamine, 4 - benzamido - 3 - isoxazolidone, 4 - benzamido - 5-methyl - 3 - isoxazolidone, and methyl a -amino - b  - aminoxy - propionate and butyrate as dihydrochlorides.  2 - Phenyl - 4 - carbohydroxamido - 2 - oxazoline is made by esterifying serine with ethanol in the presence of dry hydrogen chloride and reacting the resulting ester hydrochloride with benzimido ethyl ether (from benzonitrile, ethanol and dry hydrogen chloride).
Patent GB-1160985-A (GB)
Title: Apparatus for the Vacuum Treatment of Molten Metals
IPC: C21C7/10
Filed: 1966-08-10
Abstract: 1,160,985. Degassing molten metals. PHELPS DODGE CORP. Aug. 10, 1966 [Aug. 30, 1965], No.35900/66. Heading C7D. Vacuum degassing apparatus comprises a body formed from a block of refractory material such as graphite, or from two or more such blocks, the body being generally solid except that there is provided within it a vacuum exposure chamber, an inlet reservoir, with passage leading from it to the vacuum exposure chamber, and an outlet reservoir with passage leading thereto from the vacuum exposure chamber. The exposure chamber, inlet passage, inlet reservoir, outlet passage or outlet reservoir may be defined by parts of the surface of each of two blocks, while the inlet and/ or outlet passageways may be formed by multiple paths. In the embodiment of Fig. 11, the refractory body is formed from three blocks 120, 121 and 122, inlet reservoir 131 and outlet reservoir 132 being formed between blocks 120 and 121, and the vacuum exposure chamber being formed between blocks 121 and 122. Metal entering through resistance heated launder 123 rises, under the influence of vacuum applied through manifold 125, through feed pipes 135, and then flows over exposure surface 136 before passing down path 137 and leaving through launder 124. The refractory body is enclosed in a heat-insulating shell 126 and is heated by induction coil 129, while the apparatus may be purged of air by nitrogen supplied through pipe 48.
Patent GB-1351311-A (GB)
Title: Apparatus for measuring or indicating movement by encoding and counting
IPC: G01D5/36
Filed: 1971-07-30
Abstract: 1351311 Electric selective signalling SOC D'OPTIQUE PRECISION ELECTRONIQUE ET MECANIQUE 30 July 1971 [30 July 1970] 35999/71 Heading G4H Apparatus in which the position of sensors a, . . . e, along a graduated track relative to an origin thereon is encoded and measured in a reversible counter 9, incorporates means for determining the direction of counting and for resetting the counter whenever the sensors pass over the origin. The counter registers either positive or the absolute values of negative numbers, and has a sign indicator. The sensors are coupled to a shaper 3 and a code converter 4 having ten output gates P providing successive signals each corresponding to movement over one tenth of a pitch p; corresponding pulses obtained from differentiating circuits 61 are fed through a time-delayer 7 to a routing circuit 8 from which they either increment (C) or decrement (D) the counter 9. The signals from 4 are also fed to a circuit 11 having outputs corresponding to positive (117) and negative (116) sensor movement; the outputs are fed via a flip-flop 12 to a NAND circuit 13 together with outputs from a manually preset master-slave toggle 15 which stores the sign of the counter reading 9. Initially toggle 15 is set for a positive reading on counter 9 and the pulses corresponding to sensor movement in a positive direction are routed (C) to increment the count. Reversal of direction of the sensors causes output 116 to reset flip-flop 12 and hence circuit 13; the pulses are thus routed by circuit 8 to decrement (D) the count. When the sensors reach the origin the last decade of the counter 9 reads zero causing a sensing circuit 17 to emit a signal which enables a gate 16 connected to circuit 13; as the sensors cross over the origin the resulting signal resets toggle 15 and causes a circuit 18 to generate two phase-separated pulses. The reversal of outputs of toggle 15 causes circuit 13 to reverse its output: thus routing circuit 8 switches the pulses back to increment (C) the count; at the same time the pulses from circuit 18 are added to the count pulses so that the counter, which registers "9" now that the sensors have crossed over the origin, is reset to read "1". The (negative) count then proceeds as before. Circuit 11 comprises means for delaying each output from the gates and comparing it with the immediately preceding or succeeding signal; positive or negative movement is then indicated by a signal 117 or 116 from an appropriate AND-gate 115 or 114, Fig. 3 (not shown).
Patent GB-344351-A (GB)
Title: Improvements in or relating to the production of artificial filaments or threads
IPC: D01D4/02
Filed: 1929-11-26
Abstract: <PICT:0344351/IV/1> <PICT:0344351/IV/2> <PICT:0344351/IV/3> Artificial threads are produced by extruding a spinning solution through a jet having a plurality of groups of spinning orifices, the filaments from each group of orifices being collected as a separate thread.  The threads may be collected on separate winding or twisting and winding devices.  The filaments may be produced by dry or wet spinning, and may consist of cellulose acetate or other organic derivative of cellulose, or of regenerated cellulose.  As shown, two groups of filaments 9, 10 are extruded from a jet 8 having two groups of orifices arranged side by side.  The filaments pass round a feed roller 12 outside the cell, and are collected on cap-spinning devices 16, 17, arranged in two rows as described in Specification 343,965. To separate the groups of filaments when the apparatus is started, a dividing plate of the shape shown in Fig. 5 is inserted through a door 13 in the cell; the point of the plate is inserted between the filaments, which are gathered together as two threads in the notches 26.  It may be necessary to insert the plate also at points lower down in the cell.  The orifices in the jet 8 may be arranged on the circumference of a circle, but Fig. 4 shows an alternative form in which four groups of orifices are arranged on the circumferences of two concentric circles.  Reference is made also to the arrangement of the orifices in two or more lines.
Patent GB-438166-A (GB)
Title: Improvements in and relating to the transmission of electric energy through gaseous discharge converters
IPC: H02M7/00
Filed: 1934-12-18
Abstract: 438,166. Converting. AKT.-GES. BROWN, BOVERI, & CIE, Baden, Switzerland. Dec. 18, 1934, No. 36263. Convention date, Dec. 23, 1933. [Class 38 (ii)] In an arrangement for reversibly transmitting power between an A.C. network 1 and a regenerative load such as a D.C. traction system 8 and comprising a grid-controlled mercury vapour discharge device 4 associated with a reversing switch 6 for changing over from rectifier to inverter operation, a second mercury vapour discharge device 41 permanently connected for operation as a rectifier is connected in parallel with the device 4. A relay 11 operating in response to current supplied by the device 41 controls the reversing switch 6, the arrangement being such that so long as the load on the traction system remains below the full load capacity of the device 41 the device 4 remains connected for inverter operation and is thus ready to deal with any sudden occurrence of regenerative conditions, whereas when the load exceeds the full load capacity of the device 4<1>, the relay 11 operates to change over the switch 6 to enable the device 4 to operate as a rectifier. The relay 11 operates with a time lag in order that brief excursions of the load value beyond the critical point are ignored. A switch 7 in the D.C. circuit of the device 4 operates in conjunction with the reversing switch 6 to ensure that the D.C. circuit is open during change over.
Patent GB-823849-A (GB)
Title: Improvements in or relating to collapsable ladders
IPC: E06C1/383
Filed: 1955-12-19
Abstract: 823,849. Ladders. HALL, T. V. March 19, 1957 [Dec. 19, 1955], No. 36283/55. Class 20(2) In a collapsible ladder the side members are formed of sections 1a connected by hinged links 4 and sleeves 12 are adapted to be slid over the link to lock the sections rigidly together. The rungs comprise two parts 14, 15 hinged together at 17 and pivoted to the side members so that the ladder may be folded laterally. The side members are of square tube having plugs 8 to which the links 4 and the rungs are pivoted. Rigid or hinged members 21 space the ladder from a wall. The ladder may be. suspended by hooks 24 and may have rubber feet fixed in the bottom of the side members.
Patent GB-1124410-A (GB)
Title: Improvements in and relating to baffles for the driving medium of vacuum vapour pumps
IPC: F04B37/08
Filed: 1967-08-09
Abstract: 1,124,410. Baffles for diffusion pumps. BALZERS PATENT-UND LIZENZ-ANSALT. Aug.9, 1967 [Aug. 23, 1966], No.36577/67. Heading F1E. In a diffusion pump, having a baffle arrangement capable of being cooled by coolants of different temperature, a screen 20 associated with the uppermost nozzle cap 19 is movably connected with the baffle arrangement by means of a temperature-dependent adjustment member 16. Member 16 is a bi-metallic strip mounted on block 11 and connected to screen 20 by rod 18. When the baffle is being cooled by water the screen 20 is held in contact with block 11 and when the baffle is being cooled by liquid nitrogen it is lifted off block 11, thereby ensuring optimum pumping operation.
Patent GB-449526-A (GB)
Title: Improvements in the manufacture of biscuits for therapeutic purposes
IPC: A21D2/08
Filed: 1934-12-28
Abstract: Biscuits rich in vitamin B are prepared by mixing a ground and stabilized material rich in vitamin B with a cereal flour, adding water or milk, fat, e.g. butter, and a flavouring, and rolling and cutting into biscuits which are baked at an oven temperature not over 415 DEG  F. for not over 21 minutes until a uniform pale brown-yellow colour not due to singeing is acquired.  The material containing vitamin B which may be brewers' or distillers' yeast, rice bran or polishings, cereal germs, or a vitamin B concentrate, and the cereal flour which may be wheat, oat or rice flour may be used in equal parts by weight.  The material containing vitamin B may be dried and rolled before stabilizing which may be effected by removing or rendering inert contents giving rise to or assisting putrifaction or like degenerative change, without adding preservatives, for example, by the process described in Specification 369,556.  In an example, ground cereal germs are mixed with oat flour and milk, sugar and fat added and the mixture is baked for 17-19 minutes or less at an oven temperature not above 415 DEG  F.
Patent GB-1086045-A (GB)
Title: Improvements in or relating to contents gauging devices
Inventor: MICHAEL ETHELBERT VICTOR
IPC: G01F23/292
Filed: 1964-08-27
Abstract: 1,086,045. Photo-electric gauge. SAUNDERS ROE & NUCLEAR ENTERPRISES Ltd. Aug. 26, 1965 [Aug. 27, 1964], No.36775/65. Heading G1A. A photo-electric gauge for measuring the turbidity or depth of a liquid vapour smoke or granular solid comprises a light source 4 shielded from a photo-electric cell 2 by a screen, the whole being enclosed in a transparent block 1 for immersion in a sample. The amount of light reaching the cell 2 from the source is governed by the quantity and optical properties of the substance surrounding the block 1. The source 4 may be a gaseous radionucleide enclosed in a phosphor lined envelope and a second detector 3 may be provided to monitor the intensity of the source. Cells 2 and 3 are connected in adjacent arms of a bridge circuit. Part of the surface of the block may be silvered. A number of cells connected in series or parallel may be used as a depth gauge, Fig. 3 (not shown).
Patent GB-1394230-A (GB)
Title: Air hammer
IPC: B25D9/08
Filed: 1972-08-08
Abstract: 1394230 Percussive tools KENT AIR TOOL CO 8 Aug 1972 [11 Aug 1971] 36877/72 Heading B4C A percussive tool having a hammer piston 20 reciprocated by air supplied to either side of the piston by a distributing valve 11, includes a valve member 42 for cutting off supply of air to the distributing valve when the tool is withdrawn from its work or when the tool bit 13 encounters "no-load" conditions and for providing a partial obstruction to the flow of air in all its open positions. In operation, with the tool bit 13 abutting its work and with the piston in its rearmost position, introduction of pressure air via the distributing valve to the cylinder rearwardly of the piston, effects a driving stroke of the piston. Reversal of tubular slide valve member 12 occurs when the piston passes bore 36, so that pressure air is now directed via bore 26 to the cylinder space forwardly of the piston to effect a piston return stroke. At the commencement of each return stroke air rearwardly of the piston is exhausted to atmosphere via bores 31, and 16. On the return stroke the piston passes bore 33 to allow pressure air to return the slide valve member 12 to its illustrated position. Should the tool bit 13, member 18 which may be integral with or separate from the tool bit, and the piston overtravel forwardly, due to withdrawal of the tool or "no-load" conditions, communication between the bores 31 and 16 will be blocked to prevent exhaustion of air from the cylinder rearwardly of the piston, the space forwardly of the piston will be open to atmosphere via flats 19 on the member 18 and bore 17, and the valve member 42 will be biased into engagement with seat 47 to terminate supply of air to the distributing valve. Reapplication of the tool to its work will cause the valve member 42, and the member 18 to be moved to their illustrated positions, and thus the tool will again commence to operate. A stainless steel rod 50, which abuts the valve member 42 and the member 18, maintains the spacing between said members excepting when the member 42 engages its seat 47, and the member 18 engages seat 53 (in this case the members will be spaced by a distance of approx. 1/ 64  inch greater than the length of the rod). Air can leak through bore 51 so as to equalize the pressure on each side of the piston when the tool is inoperative.
Patent GB-1431648-A (GB)
Title: Water taps
IPC: F16L53/00
Filed: 1974-08-22
Abstract: 1431648 Valves A NOJIRI 22 Aug 1974 36964/74 Heading F2V [Also in Division G3] A water tap comprises a manually operable discharge valve and means for preventing blockage due to freezing. The tap shown comprises a main valve 15 adjustable by rotating a knob 3 to control flow from inlet fitting 10 through discharge chamber 1C to outlet 1D. The main body portion 1 is of heat insulating material, e.g. hard PVC, whereas the bonnet 11 and a restricted conduit 2 are of metal, the conduit carrying fins or rods 32 to enhance heat exchange with the ambient. Thus, in use in freezing conditions, the water freezes firstly at the restriction in the conduit 2 to close the conduit and isolate chamber 1B containing protruding parts of the bonnet 11. Thereafter temperature drop in the chamber 1B causes the pressure to rise therein. Eventually the pressure acting via gap α forces a piston 17 downwardly on to a stop 26 against the counterpressure in the discharge chamber 1C to thereby permit the pressure in chamber 1B to be relieved via gap α and hollow stem 13 of the valve 15. When the pressure in chamber 1B has fallen below that in 1C the pressure drop across the piston 17 returns it to the position wherein the chamber is once more isolated, but the pressure drop causes the piston 17 to move still further against the action of an adjustable spring 20 and raise a disc 16 and the main valve 15 attached thereto. Thus water discharges from the outlet 1D whereby warmer water eventually enters the inlet 10 and melts the ice in conduit 2 to re-open the latter to destroy the underpressure in chamber 1B and cause the main valve to return to its closed position. Thereafter the cycle of operation is repeated. To provide some degree of adjustment of the amount discharged during each cycle the bonnet 11 carries an adjustable metal sleeve 30 to adjust the effective heat conducting surface thereof. Moreover, the body portion 1 may have a metal portion adjustably shrouded by a heat insulating ring.
Patent GB-1007382-A (GB)
Title: Improvements in or relating to loose-leaf binders
IPC: B42F13/16
Filed: 1963-09-20
Abstract: 1,007,382. Loose-leaf binders. RELIUNE INDUSTRIELLE S.T.D. Sept. 20, 1963 [Sept. 21, 1962; March 14, 1963; April 8, 1963], No. 37090/63. Heading B6E. A loose-leaf binder comprises two or more links each including a central base portion 7 and two prongs 8, 9 extending from said central base portion, one or both of said prongs having an outer end portion which is inclined to a plane normal to the central base portion and passing through the inner ends of the prongs. As illustrated in Fig. 6, the outer end portions of both prongs 8, 9 are inclined to said plane. The links are pivotally mounted on a guide 2 by means of the lower ends 8a of prongs 8 which engage apertures 5 in the guide. The latter is formed from resilient material and shaped to provide a gripping portion 3 to prevent accidental disengagement of the links from the guide. Each bar 7 has a stud on its underside, such as the lower end 9a of prong 9, which engages an aperture 6 in the guide to lock the link in its " closed " position, as illustrated in Figs. 6 and 10. In this position, the free ends of the prongs 8, 9 overlap when viewed along the longitudinal axis of the guide, Figs. 15 and 16 (not shown). Thus sheets filed on prongs 8 may be slid over on to prongs 9 without becoming disengaged from the prongs at any point. Sheets filed on the device illustrated in Fig. 6 would have at least eight filing perforations. To move the binder to its " open " condition, wherein sheets may be removed from, or inserted into, the binder, the studs are disengaged from apertures 6 and the links pivoted in the direction of arrow f, by a connecting rod 11. A V-shaped step 10 on each bar, which abuts the free edge of gripping portion 3, limits the pivotal movement of the link. Various shaped prongs are illustrated and in particular one prong of each pair may comprise a straight post.